Israel warns of "high concrete threat" in Sri Lanka

From CNN's Oren Liebermann and Amir Tal

Israel's Counter-Terrorism Bureau issued a travel warning for Sri Lanka on Thursday, raising the threat level to indicate a "high concrete threat," advising travelers to leave the country and avoid visiting Sri Lanka in the near future.

The elevated alert level comes after consultations with security and foreign ministry officials, according to a statement from the Counter-Terrorism Bureau.

Level 2 is the second-highest threat level. A threat level of 1 indicates a "very high concrete threat" in which travelers are urged to leave the country immediately.

4:36 a.m. ET, April 25, 2019

Sri Lanka PM: Some terrorists were under surveillance before Easter Sunday attacks

Some of the suspected attackers responsible for the Easter Sunday bombings in Sri Lanka were being monitored by the country’s intelligence services, Sri Lanka’s Prime Minister Ranil Wickremesinghe told CNN's Ivan Watson in an interview Thursday.

There was not "sufficient" evidence to put the suspected attackers in custody prior to the attacks, Wickremesinghe said.

He reiterated that the attackers were middle- and upper-middle class and had been educated abroad. He added that the profile of the suspected bombers was "surprising."

4:21 a.m. ET, April 25, 2019

Spice tycoon, father of two attackers, in custody

From CNN’s Sandi Sidhu and James Griffiths in Colombo

A photo posted in 2016 on the Sri Lankan Minister of Science Technology and Research’s official Facebook page from a 2016 event shows Sujeewa Senasinghe (in white), former State Minister of International Trade, shaking the hand of Imsath Ahmed Ibrahim (right) as his father (middle), billionaire spice trader Mohamed Ibrahim, looks on.

Catholic services across Colombo suspended

All Catholic services across capital city Colombo have been suspended until April 29 because of security concerns, according to Fr. Edmond Tillekeratne, media director of the Archdiocese.

The decision was made at the direction of Archbishop of Colombo, Cardinal Malcolm Ranjith.

1:46 a.m. ET, April 25, 2019

One man's story of unbearable loss in Sri Lanka attack

Sudesh Kolonne with his daughter, who died in an attack on a Christian church in Negombo, Sri Lanka, on Easter Sunday. Sudesh Kolonne

Sudesh Kolonne's is one of hundreds of families destroyed by acts of unspeakable violence wrought on worshipers and tourists on April 21, Easter Sunday.

On the morning of the attack, Kolonne's family was at St. Sebastian's Church in Negombo, north of the capital Colombo, when a suicide bomber detonated an explosive. The blast killed dozens of people, including Kolonne's wife and daughter.

"These two were so excited that Sunday we'd go to church for the ceremony," he told CNN's Ivan Watson, fighting back tears. "Both died in front of me."

He showed CNN the last video he ever made of his daughter, singing a song to her father as she played an oversized guitar.

"She loved to sing, she loved to dance. She loved to create songs, you know?" he says.

"We had a really good family, especially my daughter. Now they're gone. It's very hard."

What we know about the bombers: Two sons of a wealthy spice mogul, another studied in UK

The brothers, Imsath Ahmed Ibrahim and Ilham Ahmed Ibrahim, were among the band of extremists who blew themselves up in Sunday's attacks, two sources with knowledge of the investigation said.

Their father, Mohamed Ibrahim, is the founder of Colombo-based Ishana Exports, which describes itself on its website as the "largest exporter of spices from Sri Lanka since 2006." Authorities have not announced any charges against him.

A third suicide bomber, has been named as Abdul Lathief Jameel Mohamed. British security sources told CNN that he had studied in the South East of England in 2006-2007.